OK....so this evening I got TrueRTA working...purchased the level 4 version to take measurements at 1/24th octave slices. After watching a movie, I decide to to set it up and take a measurement.....so here is the graph.


If you can't read it, it starts at 60dB and 10Hz. It has been a very windy night, so I am not sure how that effected the measurement.

As you can see, it looks like I have a nasty dip at about 38Hz, and another at just about double that frequency.....how am I going to deal with those??

I will mess around with it some more tomorrow afternoon.